Carbureter.



1. L. CLO.UDSLEY. CARBURETER.

APPVLICATION FILED JULY 1. 1915.

Patented Apr. 25,1916.

J. L. CLOUDSLEY.

CARBURETER. APPLICATION FILED JULY 7, 1915.

Patented Apr. 25,1916.

2 SHEE'TS-SHEET 2.

'To all hem 'z't may comm:

' l'nown that I, JOHN LESLIE CLOUDS- nlliject ofthe of England, rein Imam,- England', have invented ers for Internal Combustion Enwhich the following is a specificaacarbuieter of the'tyPe in which additional 1; ozz les are automatically opened as the cti'o increases. "It isw'ell-known that this as erate'd-by thego ernor or by "the 'suction of th I ne, butaccording to the present inthere is einployedwith a valve-plate 'uelf-jets communicating therewith, a e'of resilient material which covers (yes: the suction side and is secured end only] at' o'ne end of the row so reeiendjof the i'ali'e'is drawn back he suction" and imc'overs one orifice, e otl1er"orifices being uncovered as the l f 1 drawn farther back by increased finding always upon the degree of sucmoyable regulatorrplate may be em- Ved with the valve-plate having orifices in one position ofthe' plate register ie. air-orifices in the Valve-plate, and nea for, securing the regulator-plate in ted position to partially throttle the es? the fuel-jets may take the form ahnels between the two plates and com:

. on all hereiriailter fully describech l'teatures being pointed out in the v accompanying drawingsFigure 1 central vertical section through the parts of 'carloiureter which c onstitl'xte the subjectof the presentini ention; Fig. 2 is a The liii-2 2 of Fig. 1; Fig. 3 is a an of a detail of Fig. 1; Fig: 4 is a plan of the flapwalve and; Fig. 5 is a central I Specification of Letters Patent.

' .mhpplieation filed July 7, 1915. swarm; 38,426;

' w and useful"Improvements 'in ii intention Tor lmprovements'in or L g jtocarburetersfor internal combus- ,oilel gines, and has for its ob ect to provlde n-elfected by various means such as a 1 mg Sleeves or other movable members opplate.

1e degree to which it is drawn back the plate B rigidly in fits the conduitand with the air-orifices and the fuel i JoHN'LEs I-E cLoUDsLEY, or LONDON, ENGLAND.

, C RBUREEJER.

: Pat ntedpr; i916.

ing to the presentinvention :as arranged for application to a pump for charging, a twostroke cycle engine.-

The same letters indicate the sameiparts thro'ughout the drawings] V In theinduction-conduit A of. the engine, a valve-plate B is mounted having in it orifices B which are arranged in a circle and on the suction side of the engine are covered vertical section'through a carbureter accord bya fiat strip of metal (I. .The strip'C constitutes the valve and isinade ofresilient material so that it holds itself close against the plate B. One end of the strip is secured by screws'C atone end of the ring of ori fices and the strip extends around and covers all of the orifices, the extreme free end cov ering the orifice shown at the right and nearest the' top of Fig. 2' r In the center of the valve-plate B a vertiadmission conduit E and carries a handle D whereby the position of the platecan be adjusted. i 3

Around the shoulder D andfilling the re cess made thereby between theplates B' and F". TheplatesF, 'F F that register with theiorifices B i'n'the f to the value-plate-B Around the center of the plate is an alve-plate B and'thev are secured by screws toward the'plate F. The plate E is conveniently of thin metal and has" in.it a series of slots F which radiate frompoints is screwed and mounted rotatably" employed to hold 'D is a jet-plate F backedby apacking-p-late have in them orifices annular groove B the open'side of which is' above the annular groove B to. the orifices i F but do not extend into-thepacking plate. The groove B is thus in communication by means of the slots F with the orifices F and is further in communicationby a con duit B in the plate with a conduit B supplied from the float-chamber of the carbureter.

The oi'ifi'ces ij Sand the slots F may be formed in tlielp'late F bystamping and it will be observed that the slot If shown to the right and nearest to F supplied. by this slot is that Which lies under the extreme free end of the valve C.

The induction-conduit may be provided 'with any suitable throttle, indicated by a butterfly-valve Gr Fig. 1, on the engine side of the valve C.

.It will be seen that the walls of the orifices D and B taper outward in the direction of the engine, the taper of the orifices B being a continuation of the taper of the orifices D, but the walls of the orifices F of the plate lie a little proud of the Walls of the orifices D and B on the side nearest the side nearest the center of the jet-plate so as to increase the injector action on the jets formed by the slots F.

The operation of this device is as follows The suction of the engine draws back the valve C and the air entering by the air-admission conduit E and rushing through the orifices D F and B sucks fuel from the jets formed by the slots F between the two plates 13 and D so that the air is thus carbureted. The supply fuel is maintained by suitable device, such as a floatfeed,

an y

in the which keeps the annular channel B plate B filled.

it will be seen that the valve G acts as an automatic device for uncovering an increased number of jets as these are required. If the suction is not-great, only the extreme free end of the valve may be depressed so that the orifice F shown at the right and toward the top of F1gs; 2 and 3 1s uncov reter, the plate D is turned around to cover to a-greater or less extent the orifices B in the plate B until the proper richness of mixture is obtained for the particular engine. The bolt B is then screwed tight home so that'the plate D is secured against further movement. v

It will be seen that the construction of this apparatus renders it very easy to remove the the top of Fig. 3' is larger'than the other slots. The orifice plate F and substitute another providing larger or smaller jet slots, or made of thin ner or thicker material, as it is only neces sary to remove the bolt B and airadmis sion conduit E to expose the plate F and F.

In Fig. 5', the same parts as have been described with reference to Figs. 1' to 4: are

shown except that instead of their being mounted on the induction-conduit A, theyare mounted in the end of a pump-barrel H and a throttle-valve J is mounted-in the airadmission conduit instead of on the suction side of the valve C. v The barrel H in which the pump plunger H travels communicates by a valve H with the induction-conduit K of the engine and the valve 0 is made to serve the double purpose of automatically regulating the numbe of fuel-jets uncovered according to the degree of suction and as a check valve for the pump. The operation of the valve C is the same as that already described, except that as the plunger H returns after the suctionconnection is made between the top of the.

float-feed chamber L and theair-admission conduit by a conduit L so that the pres-' sure at the top of the fuel in the float-feed chamber is maintained approximately the same as that on the delivery end of the jets.

For .fiooding. the carbureter, moreover, a special device is provided. It will be seen that if the float were lifted to flood the carbureter in an arrangement as shown in Fig. 5, the fuel wouldiiow freely from all the jets so that the carbureter might become over-flooded as the operator is'unable to tell how much fuel has passed. To obviate this difliculty, a displacement plunger M is mounted in an extension M of the floatfeed chamber L. This plunger may be hollow so that normally it fio'ats at the top of the fuel, but by pushing it down, a given amount of fuel is displaced through the interconnection M and float-feed chamber L to the jets. The top of the extension M of the float-feed chamber is conveniently connected by a conduit M to the top of the float-feed chamber L, so that pressures in the float-feed chamber and its extension. are equalized. It will practically part of the fioat-feed chamber L, and in fact the whole could be made one continuous chamber,-but if a dividing partition M is provi-Qled between them, this serves as the valve C prevents the charge from and D be seen that the extension M a. guide foiithe float the float-feed chamber,--a'nd thedisplacement-plunger in the ex-' tension' -of' the float-feed chamber.

Ithasbefore been'proposed to control the air-inlet of a carburetcr by .a perforated 'plate which is rotatabletobring its perforationsmore o'r'less'into register with another set of openings,-and no claim is made to such a 'valve'per se but only tothe valve in combination with the other parts of the apparatus, as set forth in the appended claims. What I claim as my invention-and desire to secure by Letters Patent lS,Z-'r- I 1. In a carburetor the combination of an air-inlet conduit, a valve-plate in said conduit' formed kwith air-admission orifices therein, fuel jets communicating with said orifices, a resilient flap-valve extending across the suction side of said orifices, secured by one end on said plate at the end of a series of said'orifices,substantially asset forth. I

2. In a arbureter the combination of an air-inlet.conduit, a valve plate in said conduit formed with air-admission orifices therein, amovable regulator-plate formed with openings to register with said orifices, means for securing said plate in any desired position, fuel jetstconstituted by channels between said plates communicating with said orifices and a resilient flap-valve extending across the'suctlon side of said orifices, secured by one end on said plate at extending across the suction side of said the end ofa series of said orifices, substantially as set forth.

" 3. In a carburetor the combination of an air-inlet conduit, a valve-plate in said conduit formed with air-admission orlfices therein, a movable regulator-plate formed with openings to register with said orifices,

meansfor securing said plate in any desired. position, a plate between said valveplate and said regulator-plate secured on one of them and "formed with openings to register with sald orifices and with channcls constituting fuel-jets communicating with said orifices, and a resilient flap-valve orifices, secured by one end on said plate at the end of a series of said orifices, substantially as set forth.

Gdthe fixedend of said flap-valve, and smaller a series of said orifices, a fuel-jet communi- (7i1-ting. 1\\*1th the or fice most remote from fuel jets communicating with the' remainder "ifsaid orifices, substantially as set-forth. a j" Ir s-a; carburete'rthe combination of an alrn let conduit, a circular valve-plate in cured-by one end on said plate .at the end of cured byione end On'asaid plate,enlist. .tially as set forth. i f i air-inlet conduit, a valve-plate in said i with said orifices, a fuel reservoirsup'plying .ing across the suction side of saidorifices;

said conduit formedwith a series of airadmission orifices arranged in a circle thereg in, fuel-jets communicating with said iorf fices, an annular resilient flap-valve ex ing'across the suction side of said i ces cut through radially at one point and se v 6. In a carbureterthepombinationgof n ,0

duit formed with air-admission 131 I therein a movable regulator-plate fori with openings to register with said orif ce meansfor securing saidplate inaany- (16 i sired position, a: plate betweensaidvalv plate and said. regulator-plate .secured n- 84%,; oneof them' and formed with opening, register with-said orifices andkWith; opening into: said orifices, a groove in; valve-plate communicating with isa-id s ts; and a fuel conduit communicating with s groovesupplyingfueltherethrouigh an a, resilient flap-valve extending across the ISrIQ: tion side of saidorifices, securedby one end on said valve-plate at the end of, a series of said orifices, substantially as set forth.

7. In a carbureter the combinationof an air-inlet conduit formed with a shoulder thereon, a valve-plate seated on said shoulder and formed with air-admission orifices therein, fuel-jets communicating with said orifices, a member engaging the air-inlet conduit and holding the valve-plate against said shoulder therein, a movable regulatorplate formed with openings to register with said orifices lying against said valve plate, a single bolt detachably securing said regulator-plate in position and a resilient flap-- valve extending across the suction side of said orifices, substantially as set forth.

8. In a carburet'er the combination of an air-inlet conduit, a valve-plate in said conduit formed with 'airadmission orifices therein, a throttle-valve on the inlet side of said valve-plate, fuel jets communicating said jets, a pressure-balance connection 'j between said reservoir and said air inlet conduit between the throttlesval've and the valve-plate and aresilient flap-valve extendsubstantially as set forth.

9. In a carbureter the combination of an air-inlet conduit, a valve-plate in, said conduit formed with air-admission orifices therein, fuel Jets communicating with said orifices, a reservoir supplying said fuel-jets,

'a flooding plunger operative 111 said reservoir and a resilient flap-valve extending across the suction side of said orifices, substantially as set forth.

10. In an internal combustion engine the combination with a pump chamber and piston :of a valve-plate in one wall of said chamber formed'with air-admission orifices therein, fuel jets communicating-wraith said orifices, a resilient flap-va1ve 2gtending across the inner side of said orifices, wlruilch acts as a check valve -for the pump; an a fuel reservoir for supplying fuel to said jets.

11. In an internal combustion engine the I combination of a pump chamber, a piston reciprocating therein, a valve-plate forming one Wall of said chamber seated on shoulders on the other Walls of said chan1- her and formed with air-admission orifices therein, a member secured to said chamber and holding said valve-plate against said shoulder, a movable regulator-plate adjacent said valve-plate and formed with openingsto register with said orifices a single bolt retaining said re ulator-plate-in position, aplate secured on said valve p'late be tween it and said regulator-plate formed with openings registering with said orifices and With slots communicating with said orifices, said valve-plate being formed with a channel communicating. with said slots, a fuel reservoir, a conduit connecting said reservoir and saidt'hannel, a flooding plunger operative in said reservoir, a throttle-valve controlling said air-admission orifices, a

pressure-balance wonnection between said reservoir and the throttle side oi: said airadmission orifices, a resilient flap-valve ex JOHN LnsLin CLOUDSLEY.

Witnesses:

Joins CAMERON Rim-N112 H. D. Jameson. 

